1 /*- 2 * Copyright (c) 1989, 1993 3 * The Regents of the University of California. All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. All advertising materials mentioning features or use of this software 14 * must display the following acknowledgement: 15 * This product includes software developed by the University of 16 * California, Berkeley and its contributors. 17 * 4. Neither the name of the University nor the names of its contributors 18 * may be used to endorse or promote products derived from this software 19 * without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 */ 33 34 #if defined(LIBC_SCCS) && !defined(lint) 35 static char sccsid[] = "@(#)termios.c 8.2 (Berkeley) 2/21/94"; 36 #endif /* LIBC_SCCS and not lint */ 37 #include <sys/cdefs.h> 38 __FBSDID("$FreeBSD$"); 39 40 #include "namespace.h" 41 #include <sys/types.h> 42 #include <sys/fcntl.h> 43 #include <sys/ioctl.h> 44 #include <sys/time.h> 45 46 #include <errno.h> 47 #include <termios.h> 48 #include <unistd.h> 49 #include "un-namespace.h" 50 51 int 52 tcgetattr(fd, t) 53 int fd; 54 struct termios *t; 55 { 56 57 return (_ioctl(fd, TIOCGETA, t)); 58 } 59 60 int 61 tcsetattr(fd, opt, t) 62 int fd, opt; 63 const struct termios *t; 64 { 65 struct termios localterm; 66 67 if (opt & TCSASOFT) { 68 localterm = *t; 69 localterm.c_cflag |= CIGNORE; 70 t = &localterm; 71 } 72 switch (opt & ~TCSASOFT) { 73 case TCSANOW: 74 return (_ioctl(fd, TIOCSETA, t)); 75 case TCSADRAIN: 76 return (_ioctl(fd, TIOCSETAW, t)); 77 case TCSAFLUSH: 78 return (_ioctl(fd, TIOCSETAF, t)); 79 default: 80 errno = EINVAL; 81 return (-1); 82 } 83 } 84 85 int 86 tcsetpgrp(int fd, pid_t pgrp) 87 { 88 int s; 89 90 s = pgrp; 91 return (_ioctl(fd, TIOCSPGRP, &s)); 92 } 93 94 pid_t 95 tcgetpgrp(fd) 96 int fd; 97 { 98 int s; 99 100 if (_ioctl(fd, TIOCGPGRP, &s) < 0) 101 return ((pid_t)-1); 102 103 return ((pid_t)s); 104 } 105 106 speed_t 107 cfgetospeed(t) 108 const struct termios *t; 109 { 110 111 return (t->c_ospeed); 112 } 113 114 speed_t 115 cfgetispeed(t) 116 const struct termios *t; 117 { 118 119 return (t->c_ispeed); 120 } 121 122 int 123 cfsetospeed(t, speed) 124 struct termios *t; 125 speed_t speed; 126 { 127 128 t->c_ospeed = speed; 129 return (0); 130 } 131 132 int 133 cfsetispeed(t, speed) 134 struct termios *t; 135 speed_t speed; 136 { 137 138 t->c_ispeed = speed; 139 return (0); 140 } 141 142 int 143 cfsetspeed(t, speed) 144 struct termios *t; 145 speed_t speed; 146 { 147 148 t->c_ispeed = t->c_ospeed = speed; 149 return (0); 150 } 151 152 /* 153 * Make a pre-existing termios structure into "raw" mode: character-at-a-time 154 * mode with no characters interpreted, 8-bit data path. 155 */ 156 void 157 cfmakeraw(t) 158 struct termios *t; 159 { 160 161 t->c_iflag &= ~(IMAXBEL|IXOFF|INPCK|BRKINT|PARMRK|ISTRIP|INLCR|IGNCR|ICRNL|IXON|IGNPAR); 162 t->c_iflag |= IGNBRK; 163 t->c_oflag &= ~OPOST; 164 t->c_lflag &= ~(ECHO|ECHOE|ECHOK|ECHONL|ICANON|ISIG|IEXTEN|NOFLSH|TOSTOP|PENDIN); 165 t->c_cflag &= ~(CSIZE|PARENB); 166 t->c_cflag |= CS8|CREAD; 167 t->c_cc[VMIN] = 1; 168 t->c_cc[VTIME] = 0; 169 } 170 171 int 172 tcsendbreak(fd, len) 173 int fd, len; 174 { 175 struct timeval sleepytime; 176 177 sleepytime.tv_sec = 0; 178 sleepytime.tv_usec = 400000; 179 if (_ioctl(fd, TIOCSBRK, 0) == -1) 180 return (-1); 181 (void)_select(0, 0, 0, 0, &sleepytime); 182 if (_ioctl(fd, TIOCCBRK, 0) == -1) 183 return (-1); 184 return (0); 185 } 186 187 int 188 __tcdrain(fd) 189 int fd; 190 { 191 return (_ioctl(fd, TIOCDRAIN, 0)); 192 } 193 194 __weak_reference(__tcdrain, tcdrain); 195 __weak_reference(__tcdrain, _tcdrain); 196 197 int 198 tcflush(fd, which) 199 int fd, which; 200 { 201 int com; 202 203 switch (which) { 204 case TCIFLUSH: 205 com = FREAD; 206 break; 207 case TCOFLUSH: 208 com = FWRITE; 209 break; 210 case TCIOFLUSH: 211 com = FREAD | FWRITE; 212 break; 213 default: 214 errno = EINVAL; 215 return (-1); 216 } 217 return (_ioctl(fd, TIOCFLUSH, &com)); 218 } 219 220 int 221 tcflow(fd, action) 222 int fd, action; 223 { 224 struct termios term; 225 u_char c; 226 227 switch (action) { 228 case TCOOFF: 229 return (_ioctl(fd, TIOCSTOP, 0)); 230 case TCOON: 231 return (_ioctl(fd, TIOCSTART, 0)); 232 case TCION: 233 case TCIOFF: 234 if (tcgetattr(fd, &term) == -1) 235 return (-1); 236 c = term.c_cc[action == TCIOFF ? VSTOP : VSTART]; 237 if (c != _POSIX_VDISABLE && _write(fd, &c, sizeof(c)) == -1) 238 return (-1); 239 return (0); 240 default: 241 errno = EINVAL; 242 return (-1); 243 } 244 /* NOTREACHED */ 245 } 246